Update index.html

Author: Gmac4247

index.html

@@ -965,7 +965,7 @@ <h4 style="font-size:160%;margin:7px">Trigonometry</h4>
     if (typeof value !== 'number') continue;
 
     const joker = Math.abs(value - input);
-    if (joker < minDiff) {
+    if (difference < minDiff) {
       minDiff = difference;
       bestMatch = {
         angle: key,  // We're using this key as the input (the angle) that produced the value
@@ -1476,6 +1476,10 @@ <h6 style="font-size:160%;margin:7px">Area of a circle</h6>
 
   // Segment validity check
 
+	if (ratio < 0.11 || ratio > 1) {
+  document.getElementById('segment-area').innerText = 'The ratio is out of range';
+  return;
+	}
 
   const angle = parseFloat(2 * Atan(ratio));
   const sine = parseFloat(sin(angle));